ide: constify ide_dma_ops structures

---
 drivers/ide/it821x.c | 2 +-
 drivers/ide/trm290.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
 
diff --git a/drivers/ide/it821x.c b/drivers/ide/it821x.c
index f01ba46..04029d1 100644
--- a/drivers/ide/it821x.c
+++ b/drivers/ide/it821x.c
@@ -508,7 +508,7 @@ static void it821x_quirkproc(ide_drive_t *drive)
 
 }
 
-static struct ide_dma_ops it821x_pass_through_dma_ops = {
+static const struct ide_dma_ops it821x_pass_through_dma_ops = {
 	.dma_host_set		= ide_dma_host_set,
 	.dma_setup		= ide_dma_setup,
 	.dma_start		= it821x_dma_start,
diff --git a/drivers/ide/trm290.c b/drivers/ide/trm290.c
index 0069f6c..d550b37 100644
--- a/drivers/ide/trm290.c
+++ b/drivers/ide/trm290.c
@@ -314,7 +314,7 @@ static const struct ide_tp_ops trm290_tp_ops = {
 	.output_data		= ide_output_data,
 };
 
-static struct ide_dma_ops trm290_dma_ops = {
+static const struct ide_dma_ops trm290_dma_ops = {
 	.dma_host_set		= trm290_dma_host_set,
 	.dma_setup 		= trm290_dma_setup,
 	.dma_start 		= trm290_dma_start,